As the Virus Mutates, Is the Vaccine Still Effective?

vaccination
Is blocking novel coronavirus
The most effective way
Since the end of 2020, Dalian has done a good job of vaccinating key population with new crown vaccine in batches according to the risk level.
At present, the vaccination work is progressing steadily.
In recent days,
Dalian Center for Disease Control and Prevention
Han Yinan, chief of the Immunization Program Section
On public concerns during the vaccination process
Carried on carding and answer
Ask questions
Qustions
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answer
Answers
q
How long after Nova Coronavirus vaccine is administered can antibodies form protection?
a
Individuals differ in how sensitive they are to the vaccine, so the time it takes for protection to develop after vaccination also varies.
Usually about 10 days after the first injection, antibodies can be produced. However, due to individual differences, antibody titers vary between different people. Usually 14 days after the second injection, antibodies with high titers can be produced, forming effective protection.
q
How long is the protection period of Novel Coronavirus vaccine?
a
Ⅰ period, Ⅱ period clinical subjects are also continue to observe, the data obtained from already, can maintain at least 6 months above, to the world health organization specified requirements.
At present, the earliest vaccinated people have been monitored for more than eight months, the results show that it is still effective, with the extension of the observation period, the accumulation of research data, more than six months or even longer protection period may be confirmed.
q
Does Novel Coronavirus Vaccine Still Work?
a
Novel coronavirus vaccine is an inactivated vaccine, contains a variety of viral antigen components, is a broad spectrum, from the global different regions of the virus strains have a good crossover and neutralization effect, according to the current novel coronavirus mutation, reduce the effectiveness of the vaccine is not possible.
q
Novel Coronavirus vaccine How long after the first dose to get the second dose?
a
The first needle and the second needle interval is generally 14 to 28 days, the interval of three weeks to four weeks the best effect.
Immune persistence, antibody positive conversion level, antibody mean value and other indicators were better than the interval of two weeks.
q
What about Novel Coronavirus vaccine more than 28 days apart?
a
If a second dose of Novel Coronavirus vaccine is not received within 28 days after the first dose, re-inoculation is recommended as soon as possible within 1 to 2 weeks.
Novel Coronavirus vaccine immunization program currently used in China requires two doses, 14 to 28 days apart.
There is no clinical data on the effect of delayed second dose of Novel Coronavirus vaccine on its efficacy.
q
Novel coronavirus vaccine the second needle is not vaccinated OK?
a
Generally speaking, inoculate the first needle 10 days or so can produce antibody, but right now the antibody has not yet reached the neutralizing antibody titer that kills the virus, so inoculate the 2nd needle is very necessary.
q
Novel coronavirus vaccine after the first needle is inoculated, appear allergic reaction still can inoculate the 2nd needle?
a
A second dose is not recommended if a severe allergic reaction occurs after the first dose and cannot be ruled out as a vaccine cause.
It should be noted that local reactions such as pain, tenderness, redness and itching at the injection site and transient fever reactions do not belong to allergic reactions, and the second dose of vaccine can still be administered.
q
Can two injections of Novel Coronavirus vaccine be given from different manufacturers?
a
For now, the recommended two doses of Novel Coronavirus should be from the same manufacturer.
q
Do I have to wait 30 minutes at the vaccination site after receiving the Novel Coronavirus vaccine?
a
You must stay at the vaccination site for 30 minutes!
This is not a specific requirement for the Novel Coronavirus vaccine. Any vaccine should be given after 30 minutes of observation at the vaccination site.
q
Are there any serious adverse reactions to Novel Coronavirus vaccine?
a
At present, the adverse reactions detected are mainly local reactions, mainly pain at the inoculation site, while systemic reactions mainly include headache, myalgia and fever, etc., pain at the inoculation site and transient fever, etc., are not included in the category of serious adverse reactions.
The adverse reactions detected so far are far lower than those of common vaccines already on the market.
q
After being vaccinated with novel coronavirus vaccine, still use to wear a mask?
a
Novel Coronavirus vaccine takes a certain amount of time to produce protective antibodies, during which time there may be a risk of infection due to failure to obtain effective immune protection.
In individuals, the protection from vaccination is not 100%.
Before the formation of the crowd immune barrier, novel coronavirus is still easy to spread, so it is suggested that after vaccination, still want to maintain “wear a mask, wash hands frequently, often ventilation, less gathering” and other good hygiene habits, do personal protection.